Rafael Pacheco Pérez Cessna Incident (1976)

The flight

On 21 June 1976, Rafael Pacheco Pérez, a roughly 20-year-old student at the Escuela de Aviación de México in Chimalhuacán, State of Mexico, took a Cessna 150 on a practice flight. He had about 52 hours of flight experience. According to the most detailed Spanish-language retelling, the aircraft dropped from radar a few minutes after takeoff and was out of contact for about an hour. It then reappeared near Acapulco on the Pacific coast, more than 250 km from its departure point. Ecoosfera, which reviews the case, notes that the distance seemed incompatible with the aircraft's normal capabilities, and the pilot reportedly landed confused and unable to recall much of the flight, a condition the article calls "missing time."

The claim is commonly cited as one of Mexico's best-known pilot encounters, and it is often grouped with the 1974 and 1975 Mexican reports that the ufology community has long discussed.

The radio message

The most widely repeated element is the radio exchange with the Acapulco control tower. Retellings say the voice that came over the radio did not sound like the pilot's, and that it said "Lo estamos utilizando como si fuera un micrófono" ("We are using it as if it were a microphone"). The message reportedly claimed an extraterrestrial origin and urged peace, and was said to have been delivered in languages the pilot did not speak, such as English and German. The air traffic controller most often named as the source of the tower testimony is Carlos de Kretschy.

English-language ufology pages add a tractor beam and a telepathic message. These details do not appear in the Spanish-language accounts reviewed here and should be treated as later embellishment.

Investigation and sourcing

The case rests almost entirely on testimony. Ecoosfera states that no verifiable radar records, complete technical reports, or official documentation are publicly accessible, and it does not identify any official investigation. The most detailed English-language treatment is UFOs Over Mexico by Carlos Guzmán and Alfonso Salazar, first published in Spanish in 2001; the Roswell Books promotional page for the translation presents the case in the authors' framing, not as an independent finding.

The accounts also disagree on details. One version says the flight would normally take about three hours in an aircraft of that type, while another says the pilot reached his destination in about an hour with his fuel tank nearly full. A Spanish report says he took around three hours to regain consciousness, which does not match the other versions. Some researchers say medical exams found no alcohol, drugs, or significant physical abnormalities, but these results are reported secondhand.

Explanations and status

The case remains unresolved and divides opinion. Rational explanations proposed in the Spanish-language coverage include spatial disorientation or navigation error, hypoxia (oxygen deficiency causing confusion), radio interference that could distort a voice, and the limited ability of 1970s radar to track small, low-flying aircraft. Each of these could account for a brief loss of contact and a confused landing, though none explains the message or the distance covered.

Wikipedia's coverage of UFO sightings in Mexico does not list this incident, which suggests that mainstream reference works have not treated it as a documented case. For a researcher, the reliable facts are the flight, the radar gap as reported, and the landing at Acapulco. The extraordinary elements rest on the pilot's later account and on the controller's testimony, and no primary record has been made public to confirm them.